Small Engines Carburetor Rebuild

Published on March 18th, 2015 | by Jacks


Carburetor Rebuild

If your power equipment engine is hesitating to start, stalling, or eating too much gas, you may want to consider rebuilding your carburetor.

The first thing you always want to do before servicing your power equipment is check your owner’s manual for specific guidelines and regulations.

Then, gather your tools, find a clean, open area and get started! Below are some helpful tips and guidelines for successfully rebuilding your carburetor.

1. Remove the carb from the engine according to your manufacturers directions. Make sure to remember where all the linkage rods and springs went.

carburetor removed from engine

Be careful when removing the carburetor not to tear the intake gasket. If your gasket is damaged, replace the gasket. Check out our selection of gasketshere at Jack’s

2. Carefully remove the fuel bowl from the carb body, this may either be a bolt or a high speed mixture screw holding it on. Be prepared for some gas to come out of the bowl.

remove fuel bowl screws

bowl screws removed

3. Push or pull the float hinge pin out so you can remove the float and the needle valve assembly.

remove float hinge pin

float hinge pin and bowl removed

4. If your carb contains an idle mixture screw, remove it along with the spring.

If your carb is equiped with a main jet that is removable you can remove and clean it. I recommend using a carb screwdriver for removal of the main jet, a regular screw driver can damage the soft brass jet.

remove idle mixture screw

idle mixture screw removed

5. Now you are ready to clean the carb with a good carb cleaner. You can soak the carb parts in cleaner for no more than 10 minutes. Then wipe them clean or blow them dry with compressed air.

Spray the carb with cleaner paying attention to all the holes. Then blow the carb out with compressed air.


Be careful to put everything back where it came from. If your carb has any adjustable mixture screws, when you first re-install them turn them in all the way then back out 1 to 1 and a half turns and that will get you to the point where the engine can start.

For specific tuning of your carb, consult your owner’s manual.

idle mixture screw

Jack’s Safety Tips: Before servicing or repairing any power equipment, disconnect the spark plug and battery cables. Remember to wear appropriate safety glasses and gloves to protect against harmful chemicals and debris. View our Disclaimer.

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About the Author

Jack's Small Engines has been providing parts for outdoor power equipment online since 1997. We also run a service center for outdoor power equipment like riding mowers, snow blowers, generators, chainsaws, and just about anything else.

8 Responses to Carburetor Rebuild

  1. Joe Richardson says:

    Thank you for a very good tutorial.

  2. Joe Driscoll says:

    I own a Craftsman 2 cycle Gas Trimmer (Model 316.791880), which I cannot keep running. I can get it started but when I move it from the horizontal position to the vertical it stalls out. I have new gas in it, cleaned the gas filter, and air filter, and also removed the carb and cleaned it out. I am unable to find a rebuild kit for it; also it requires a special tool to adjust the carb (Hi,Low), which I cannot find. Can I buy a repair kit for this carb (753-04338)or do I have to buy a new carb?

    Thanks, JoeD.

  3. Jim says:

    Just received some parts for 2 cycle Tucusmseh carb. # 640088. Is there a
    “dyi” page on your site for correctly installing the float spring–unfortunately, when I removed the fuel bowl and float, forgot how the float spring goes on the shaft holding the float. Thanks/Jim

  4. Ricky Phillips says:

    i need help please 🙂 i have an ariens rm 1132e rear riding mower 11 hp b&s the engine seems to run fine my problem is if i try to engage the blades or shift to a speed it will choke down with the cluch in or out i can slightly engage and back off and it will continue to run may i please ask if anyone has a suggestion on what i should other than shoot it with a shot gun lol

    i thank you in advance for any help

    • Ron Blankenship says:

      I seem to be having a similar problem. I have a B & S 18.5 hp motor.This is on a murray riding mower. It starts and runs fine. If I try to put the blades in gear or try to drive it – the carburetor floods out. I have put new gas and filter in. I also pulled the carburetor apart and checked the float and the needle valve – all seems to be ok as well as the gaskets. Any suggestions are appreciated.

  5. Tom Shriver says:

    I have a Briggs & Stratton engine on a Coleman Powermate Generator. The Carburetor is shot. There are 3 numbers on the Carb: 9208, 2760 & 214706 I can not for the life of me find this carburetor anywhere.
    1. Can it be rebuilt?
    2. What kit would I need for the Rebuild?
    3. Who could I send it to, to have them rebuild it?

    Thank you, Tom

  6. john gilbert says:

    do you have a diagram of a carb for a 1999 model 2185 cub cadet? I started to backfire the other day. thanks,

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